1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Copyright (C) 2008, cozybit Inc. 4 * Copyright (C) 2003-2006, Marvell International Ltd. 5 */ 6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7 8#include <linux/hardirq.h> 9#include <linux/slab.h> 10 11#include <linux/etherdevice.h> 12#include <linux/module.h> 13#include "libertas_tf.h" 14 15/* thinfirm version: 5.132.X.pX */ 16#define LBTF_FW_VER_MIN 0x05840300 17#define LBTF_FW_VER_MAX 0x0584ffff 18 19/* Module parameters */ 20unsigned int lbtf_debug; 21EXPORT_SYMBOL_GPL(lbtf_debug); 22module_param_named(libertas_tf_debug, lbtf_debug, int, 0644); 23 24struct workqueue_struct *lbtf_wq; 25 26static const struct ieee80211_channel lbtf_channels[] = { 27 { .center_freq = 2412, .hw_value = 1 }, 28 { .center_freq = 2417, .hw_value = 2 }, 29 { .center_freq = 2422, .hw_value = 3 }, 30 { .center_freq = 2427, .hw_value = 4 }, 31 { .center_freq = 2432, .hw_value = 5 }, 32 { .center_freq = 2437, .hw_value = 6 }, 33 { .center_freq = 2442, .hw_value = 7 }, 34 { .center_freq = 2447, .hw_value = 8 }, 35 { .center_freq = 2452, .hw_value = 9 }, 36 { .center_freq = 2457, .hw_value = 10 }, 37 { .center_freq = 2462, .hw_value = 11 }, 38 { .center_freq = 2467, .hw_value = 12 }, 39 { .center_freq = 2472, .hw_value = 13 }, 40 { .center_freq = 2484, .hw_value = 14 }, 41}; 42 43/* This table contains the hardware specific values for the modulation rates. */ 44static const struct ieee80211_rate lbtf_rates[] = { 45 { .bitrate = 10, 46 .hw_value = 0, }, 47 { .bitrate = 20, 48 .hw_value = 1, 49 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 50 { .bitrate = 55, 51 .hw_value = 2, 52 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 53 { .bitrate = 110, 54 .hw_value = 3, 55 .flags = IEEE80211_RATE_SHORT_PREAMBLE }, 56 { .bitrate = 60, 57 .hw_value = 5, 58 .flags = 0 }, 59 { .bitrate = 90, 60 .hw_value = 6, 61 .flags = 0 }, 62 { .bitrate = 120, 63 .hw_value = 7, 64 .flags = 0 }, 65 { .bitrate = 180, 66 .hw_value = 8, 67 .flags = 0 }, 68 { .bitrate = 240, 69 .hw_value = 9, 70 .flags = 0 }, 71 { .bitrate = 360, 72 .hw_value = 10, 73 .flags = 0 }, 74 { .bitrate = 480, 75 .hw_value = 11, 76 .flags = 0 }, 77 { .bitrate = 540, 78 .hw_value = 12, 79 .flags = 0 }, 80}; 81 82static void lbtf_cmd_work(struct work_struct *work) 83{ 84 struct lbtf_private *priv = container_of(work, struct lbtf_private, 85 cmd_work); 86 87 lbtf_deb_enter(LBTF_DEB_CMD); 88 89 spin_lock_irq(&priv->driver_lock); 90 /* command response? */ 91 if (priv->cmd_response_rxed) { 92 priv->cmd_response_rxed = 0; 93 spin_unlock_irq(&priv->driver_lock); 94 lbtf_process_rx_command(priv); 95 spin_lock_irq(&priv->driver_lock); 96 } 97 98 if (priv->cmd_timed_out && priv->cur_cmd) { 99 struct cmd_ctrl_node *cmdnode = priv->cur_cmd; 100 101 if (++priv->nr_retries > 10) { 102 lbtf_complete_command(priv, cmdnode, 103 -ETIMEDOUT); 104 priv->nr_retries = 0; 105 } else { 106 priv->cur_cmd = NULL; 107 108 /* Stick it back at the _top_ of the pending 109 * queue for immediate resubmission */ 110 list_add(&cmdnode->list, &priv->cmdpendingq); 111 } 112 } 113 priv->cmd_timed_out = 0; 114 spin_unlock_irq(&priv->driver_lock); 115 116 /* Execute the next command */ 117 if (!priv->cur_cmd) 118 lbtf_execute_next_command(priv); 119 120 lbtf_deb_leave(LBTF_DEB_CMD); 121} 122 123/* 124 * This function handles the timeout of command sending. 125 * It will re-send the same command again. 126 */ 127static void command_timer_fn(struct timer_list *t) 128{ 129 struct lbtf_private *priv = from_timer(priv, t, command_timer); 130 unsigned long flags; 131 lbtf_deb_enter(LBTF_DEB_CMD); 132 133 spin_lock_irqsave(&priv->driver_lock, flags); 134 135 if (!priv->cur_cmd) { 136 printk(KERN_DEBUG "libertastf: command timer expired; " 137 "no pending command\n"); 138 goto out; 139 } 140 141 printk(KERN_DEBUG "libertas: command %x timed out\n", 142 le16_to_cpu(priv->cur_cmd->cmdbuf->command)); 143 144 priv->cmd_timed_out = 1; 145 queue_work(lbtf_wq, &priv->cmd_work); 146out: 147 spin_unlock_irqrestore(&priv->driver_lock, flags); 148 lbtf_deb_leave(LBTF_DEB_CMD); 149} 150 151static int lbtf_init_adapter(struct lbtf_private *priv) 152{ 153 lbtf_deb_enter(LBTF_DEB_MAIN); 154 eth_broadcast_addr(priv->current_addr); 155 mutex_init(&priv->lock); 156 157 priv->vif = NULL; 158 timer_setup(&priv->command_timer, command_timer_fn, 0); 159 160 INIT_LIST_HEAD(&priv->cmdfreeq); 161 INIT_LIST_HEAD(&priv->cmdpendingq); 162 163 spin_lock_init(&priv->driver_lock); 164 165 /* Allocate the command buffers */ 166 if (lbtf_allocate_cmd_buffer(priv)) 167 return -1; 168 169 lbtf_deb_leave(LBTF_DEB_MAIN); 170 return 0; 171} 172 173static void lbtf_free_adapter(struct lbtf_private *priv) 174{ 175 lbtf_deb_enter(LBTF_DEB_MAIN); 176 lbtf_free_cmd_buffer(priv); 177 del_timer(&priv->command_timer); 178 lbtf_deb_leave(LBTF_DEB_MAIN); 179} 180 181static void lbtf_op_tx(struct ieee80211_hw *hw, 182 struct ieee80211_tx_control *control, 183 struct sk_buff *skb) 184{ 185 struct lbtf_private *priv = hw->priv; 186 187 priv->skb_to_tx = skb; 188 queue_work(lbtf_wq, &priv->tx_work); 189 /* 190 * queue will be restarted when we receive transmission feedback if 191 * there are no buffered multicast frames to send 192 */ 193 ieee80211_stop_queues(priv->hw); 194} 195 196static void lbtf_tx_work(struct work_struct *work) 197{ 198 struct lbtf_private *priv = container_of(work, struct lbtf_private, 199 tx_work); 200 unsigned int len; 201 struct ieee80211_tx_info *info; 202 struct txpd *txpd; 203 struct sk_buff *skb = NULL; 204 int err; 205 206 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX); 207 208 if ((priv->vif->type == NL80211_IFTYPE_AP) && 209 (!skb_queue_empty(&priv->bc_ps_buf))) 210 skb = skb_dequeue(&priv->bc_ps_buf); 211 else if (priv->skb_to_tx) { 212 skb = priv->skb_to_tx; 213 priv->skb_to_tx = NULL; 214 } else { 215 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 216 return; 217 } 218 219 len = skb->len; 220 info = IEEE80211_SKB_CB(skb); 221 txpd = skb_push(skb, sizeof(struct txpd)); 222 223 if (priv->surpriseremoved) { 224 dev_kfree_skb_any(skb); 225 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 226 return; 227 } 228 229 memset(txpd, 0, sizeof(struct txpd)); 230 /* Activate per-packet rate selection */ 231 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE | 232 ieee80211_get_tx_rate(priv->hw, info)->hw_value); 233 234 /* copy destination address from 802.11 header */ 235 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4, 236 ETH_ALEN); 237 txpd->tx_packet_length = cpu_to_le16(len); 238 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); 239 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); 240 BUG_ON(priv->tx_skb); 241 spin_lock_irq(&priv->driver_lock); 242 priv->tx_skb = skb; 243 err = priv->ops->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len); 244 spin_unlock_irq(&priv->driver_lock); 245 if (err) { 246 dev_kfree_skb_any(skb); 247 priv->tx_skb = NULL; 248 pr_err("TX error: %d", err); 249 } 250 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX); 251} 252 253static int lbtf_op_start(struct ieee80211_hw *hw) 254{ 255 struct lbtf_private *priv = hw->priv; 256 257 lbtf_deb_enter(LBTF_DEB_MACOPS); 258 259 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; 260 priv->radioon = RADIO_ON; 261 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; 262 lbtf_set_mac_control(priv); 263 lbtf_set_radio_control(priv); 264 265 lbtf_deb_leave(LBTF_DEB_MACOPS); 266 return 0; 267} 268 269static void lbtf_op_stop(struct ieee80211_hw *hw) 270{ 271 struct lbtf_private *priv = hw->priv; 272 unsigned long flags; 273 struct sk_buff *skb; 274 275 struct cmd_ctrl_node *cmdnode; 276 277 lbtf_deb_enter(LBTF_DEB_MACOPS); 278 279 /* Flush pending command nodes */ 280 spin_lock_irqsave(&priv->driver_lock, flags); 281 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { 282 cmdnode->result = -ENOENT; 283 cmdnode->cmdwaitqwoken = 1; 284 wake_up_interruptible(&cmdnode->cmdwait_q); 285 } 286 287 spin_unlock_irqrestore(&priv->driver_lock, flags); 288 cancel_work_sync(&priv->cmd_work); 289 cancel_work_sync(&priv->tx_work); 290 while ((skb = skb_dequeue(&priv->bc_ps_buf))) 291 dev_kfree_skb_any(skb); 292 priv->radioon = RADIO_OFF; 293 lbtf_set_radio_control(priv); 294 295 lbtf_deb_leave(LBTF_DEB_MACOPS); 296} 297 298static int lbtf_op_add_interface(struct ieee80211_hw *hw, 299 struct ieee80211_vif *vif) 300{ 301 struct lbtf_private *priv = hw->priv; 302 lbtf_deb_enter(LBTF_DEB_MACOPS); 303 if (priv->vif != NULL) 304 return -EOPNOTSUPP; 305 306 priv->vif = vif; 307 switch (vif->type) { 308 case NL80211_IFTYPE_MESH_POINT: 309 case NL80211_IFTYPE_AP: 310 lbtf_set_mode(priv, LBTF_AP_MODE); 311 break; 312 case NL80211_IFTYPE_STATION: 313 lbtf_set_mode(priv, LBTF_STA_MODE); 314 break; 315 default: 316 priv->vif = NULL; 317 return -EOPNOTSUPP; 318 } 319 lbtf_set_mac_address(priv, (u8 *) vif->addr); 320 lbtf_deb_leave(LBTF_DEB_MACOPS); 321 return 0; 322} 323 324static void lbtf_op_remove_interface(struct ieee80211_hw *hw, 325 struct ieee80211_vif *vif) 326{ 327 struct lbtf_private *priv = hw->priv; 328 lbtf_deb_enter(LBTF_DEB_MACOPS); 329 330 if (priv->vif->type == NL80211_IFTYPE_AP || 331 priv->vif->type == NL80211_IFTYPE_MESH_POINT) 332 lbtf_beacon_ctrl(priv, 0, 0); 333 lbtf_set_mode(priv, LBTF_PASSIVE_MODE); 334 lbtf_set_bssid(priv, 0, NULL); 335 priv->vif = NULL; 336 lbtf_deb_leave(LBTF_DEB_MACOPS); 337} 338 339static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed) 340{ 341 struct lbtf_private *priv = hw->priv; 342 struct ieee80211_conf *conf = &hw->conf; 343 lbtf_deb_enter(LBTF_DEB_MACOPS); 344 345 if (conf->chandef.chan->center_freq != priv->cur_freq) { 346 priv->cur_freq = conf->chandef.chan->center_freq; 347 lbtf_set_channel(priv, conf->chandef.chan->hw_value); 348 } 349 lbtf_deb_leave(LBTF_DEB_MACOPS); 350 return 0; 351} 352 353static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw, 354 struct netdev_hw_addr_list *mc_list) 355{ 356 struct lbtf_private *priv = hw->priv; 357 int i; 358 struct netdev_hw_addr *ha; 359 int mc_count = netdev_hw_addr_list_count(mc_list); 360 361 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) 362 return mc_count; 363 364 priv->nr_of_multicastmacaddr = mc_count; 365 i = 0; 366 netdev_hw_addr_list_for_each(ha, mc_list) 367 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN); 368 369 return mc_count; 370} 371 372#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI 373static void lbtf_op_configure_filter(struct ieee80211_hw *hw, 374 unsigned int changed_flags, 375 unsigned int *new_flags, 376 u64 multicast) 377{ 378 struct lbtf_private *priv = hw->priv; 379 int old_mac_control = priv->mac_control; 380 381 lbtf_deb_enter(LBTF_DEB_MACOPS); 382 383 changed_flags &= SUPPORTED_FIF_FLAGS; 384 *new_flags &= SUPPORTED_FIF_FLAGS; 385 386 if (!changed_flags) { 387 lbtf_deb_leave(LBTF_DEB_MACOPS); 388 return; 389 } 390 391 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; 392 if (*new_flags & (FIF_ALLMULTI) || 393 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) { 394 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 395 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; 396 } else if (multicast) { 397 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; 398 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; 399 lbtf_cmd_set_mac_multicast_addr(priv); 400 } else { 401 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | 402 CMD_ACT_MAC_ALL_MULTICAST_ENABLE); 403 if (priv->nr_of_multicastmacaddr) { 404 priv->nr_of_multicastmacaddr = 0; 405 lbtf_cmd_set_mac_multicast_addr(priv); 406 } 407 } 408 409 410 if (priv->mac_control != old_mac_control) 411 lbtf_set_mac_control(priv); 412 413 lbtf_deb_leave(LBTF_DEB_MACOPS); 414} 415 416static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, 417 struct ieee80211_vif *vif, 418 struct ieee80211_bss_conf *bss_conf, 419 u32 changes) 420{ 421 struct lbtf_private *priv = hw->priv; 422 struct sk_buff *beacon; 423 lbtf_deb_enter(LBTF_DEB_MACOPS); 424 425 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) { 426 switch (priv->vif->type) { 427 case NL80211_IFTYPE_AP: 428 case NL80211_IFTYPE_MESH_POINT: 429 beacon = ieee80211_beacon_get(hw, vif); 430 if (beacon) { 431 lbtf_beacon_set(priv, beacon); 432 kfree_skb(beacon); 433 lbtf_beacon_ctrl(priv, 1, 434 bss_conf->beacon_int); 435 } 436 break; 437 default: 438 break; 439 } 440 } 441 442 if (changes & BSS_CHANGED_BSSID) { 443 bool activate = !is_zero_ether_addr(bss_conf->bssid); 444 lbtf_set_bssid(priv, activate, bss_conf->bssid); 445 } 446 447 if (changes & BSS_CHANGED_ERP_PREAMBLE) { 448 if (bss_conf->use_short_preamble) 449 priv->preamble = CMD_TYPE_SHORT_PREAMBLE; 450 else 451 priv->preamble = CMD_TYPE_LONG_PREAMBLE; 452 lbtf_set_radio_control(priv); 453 } 454 455 lbtf_deb_leave(LBTF_DEB_MACOPS); 456} 457 458static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx, 459 struct survey_info *survey) 460{ 461 struct lbtf_private *priv = hw->priv; 462 struct ieee80211_conf *conf = &hw->conf; 463 464 if (idx != 0) 465 return -ENOENT; 466 467 survey->channel = conf->chandef.chan; 468 survey->filled = SURVEY_INFO_NOISE_DBM; 469 survey->noise = priv->noise; 470 471 return 0; 472} 473 474static const struct ieee80211_ops lbtf_ops = { 475 .tx = lbtf_op_tx, 476 .start = lbtf_op_start, 477 .stop = lbtf_op_stop, 478 .add_interface = lbtf_op_add_interface, 479 .remove_interface = lbtf_op_remove_interface, 480 .config = lbtf_op_config, 481 .prepare_multicast = lbtf_op_prepare_multicast, 482 .configure_filter = lbtf_op_configure_filter, 483 .bss_info_changed = lbtf_op_bss_info_changed, 484 .get_survey = lbtf_op_get_survey, 485}; 486 487int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) 488{ 489 struct ieee80211_rx_status stats; 490 struct rxpd *prxpd; 491 int need_padding; 492 struct ieee80211_hdr *hdr; 493 494 lbtf_deb_enter(LBTF_DEB_RX); 495 496 if (priv->radioon != RADIO_ON) { 497 lbtf_deb_rx("rx before we turned on the radio"); 498 goto done; 499 } 500 501 prxpd = (struct rxpd *) skb->data; 502 503 memset(&stats, 0, sizeof(stats)); 504 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) 505 stats.flag |= RX_FLAG_FAILED_FCS_CRC; 506 stats.freq = priv->cur_freq; 507 stats.band = NL80211_BAND_2GHZ; 508 stats.signal = prxpd->snr - prxpd->nf; 509 priv->noise = prxpd->nf; 510 /* Marvell rate index has a hole at value 4 */ 511 if (prxpd->rx_rate > 4) 512 --prxpd->rx_rate; 513 stats.rate_idx = prxpd->rx_rate; 514 skb_pull(skb, sizeof(struct rxpd)); 515 516 hdr = (struct ieee80211_hdr *)skb->data; 517 518 need_padding = ieee80211_is_data_qos(hdr->frame_control); 519 need_padding ^= ieee80211_has_a4(hdr->frame_control); 520 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) && 521 (*ieee80211_get_qos_ctl(hdr) & 522 IEEE80211_QOS_CTL_A_MSDU_PRESENT); 523 524 if (need_padding) { 525 memmove(skb->data + 2, skb->data, skb->len); 526 skb_reserve(skb, 2); 527 } 528 529 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 530 531 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n", 532 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd)); 533 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data, 534 min_t(unsigned int, skb->len, 100)); 535 536 ieee80211_rx_irqsafe(priv->hw, skb); 537 538done: 539 lbtf_deb_leave(LBTF_DEB_RX); 540 return 0; 541} 542EXPORT_SYMBOL_GPL(lbtf_rx); 543 544/* 545 * lbtf_add_card: Add and initialize the card. 546 * 547 * Returns: pointer to struct lbtf_priv. 548 */ 549struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev, 550 const struct lbtf_ops *ops) 551{ 552 struct ieee80211_hw *hw; 553 struct lbtf_private *priv = NULL; 554 555 lbtf_deb_enter(LBTF_DEB_MAIN); 556 557 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); 558 if (!hw) 559 goto done; 560 561 priv = hw->priv; 562 if (lbtf_init_adapter(priv)) 563 goto err_init_adapter; 564 565 priv->hw = hw; 566 priv->card = card; 567 priv->ops = ops; 568 priv->tx_skb = NULL; 569 priv->radioon = RADIO_OFF; 570 571 hw->queues = 1; 572 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 573 ieee80211_hw_set(hw, SIGNAL_DBM); 574 hw->extra_tx_headroom = sizeof(struct txpd); 575 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); 576 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); 577 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); 578 priv->band.bitrates = priv->rates; 579 priv->band.n_channels = ARRAY_SIZE(lbtf_channels); 580 priv->band.channels = priv->channels; 581 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band; 582 hw->wiphy->interface_modes = 583 BIT(NL80211_IFTYPE_STATION) | 584 BIT(NL80211_IFTYPE_ADHOC); 585 skb_queue_head_init(&priv->bc_ps_buf); 586 587 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 588 589 SET_IEEE80211_DEV(hw, dmdev); 590 591 INIT_WORK(&priv->cmd_work, lbtf_cmd_work); 592 INIT_WORK(&priv->tx_work, lbtf_tx_work); 593 594 if (priv->ops->hw_prog_firmware(priv)) { 595 lbtf_deb_usbd(dmdev, "Error programming the firmware\n"); 596 priv->ops->hw_reset_device(priv); 597 goto err_init_adapter; 598 } 599 600 eth_broadcast_addr(priv->current_addr); 601 if (lbtf_update_hw_spec(priv)) 602 goto err_init_adapter; 603 604 if (priv->fwrelease < LBTF_FW_VER_MIN || 605 priv->fwrelease > LBTF_FW_VER_MAX) { 606 goto err_init_adapter; 607 } 608 609 /* The firmware seems to start with the radio enabled. Turn it 610 * off before an actual mac80211 start callback is invoked. 611 */ 612 lbtf_set_radio_control(priv); 613 614 if (ieee80211_register_hw(hw)) 615 goto err_init_adapter; 616 617 dev_info(dmdev, "libertastf: Marvell WLAN 802.11 thinfirm adapter\n"); 618 goto done; 619 620err_init_adapter: 621 lbtf_free_adapter(priv); 622 ieee80211_free_hw(hw); 623 priv = NULL; 624 625done: 626 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv); 627 return priv; 628} 629EXPORT_SYMBOL_GPL(lbtf_add_card); 630 631 632int lbtf_remove_card(struct lbtf_private *priv) 633{ 634 struct ieee80211_hw *hw = priv->hw; 635 636 lbtf_deb_enter(LBTF_DEB_MAIN); 637 638 priv->surpriseremoved = 1; 639 del_timer(&priv->command_timer); 640 lbtf_free_adapter(priv); 641 priv->hw = NULL; 642 ieee80211_unregister_hw(hw); 643 ieee80211_free_hw(hw); 644 645 lbtf_deb_leave(LBTF_DEB_MAIN); 646 return 0; 647} 648EXPORT_SYMBOL_GPL(lbtf_remove_card); 649 650void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) 651{ 652 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); 653 654 ieee80211_tx_info_clear_status(info); 655 /* 656 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 657 * default pid rc algorithm. 658 * 659 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; 660 */ 661 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) 662 info->flags |= IEEE80211_TX_STAT_ACK; 663 skb_pull(priv->tx_skb, sizeof(struct txpd)); 664 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); 665 priv->tx_skb = NULL; 666 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) 667 ieee80211_wake_queues(priv->hw); 668 else 669 queue_work(lbtf_wq, &priv->tx_work); 670} 671EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); 672 673void lbtf_bcn_sent(struct lbtf_private *priv) 674{ 675 struct sk_buff *skb = NULL; 676 677 if (priv->vif->type != NL80211_IFTYPE_AP) 678 return; 679 680 if (skb_queue_empty(&priv->bc_ps_buf)) { 681 bool tx_buff_bc = false; 682 683 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { 684 skb_queue_tail(&priv->bc_ps_buf, skb); 685 tx_buff_bc = true; 686 } 687 if (tx_buff_bc) { 688 ieee80211_stop_queues(priv->hw); 689 queue_work(lbtf_wq, &priv->tx_work); 690 } 691 } 692 693 skb = ieee80211_beacon_get(priv->hw, priv->vif); 694 695 if (skb) { 696 lbtf_beacon_set(priv, skb); 697 kfree_skb(skb); 698 } 699} 700EXPORT_SYMBOL_GPL(lbtf_bcn_sent); 701 702static int __init lbtf_init_module(void) 703{ 704 lbtf_deb_enter(LBTF_DEB_MAIN); 705 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0); 706 if (lbtf_wq == NULL) { 707 printk(KERN_ERR "libertastf: couldn't create workqueue\n"); 708 return -ENOMEM; 709 } 710 lbtf_deb_leave(LBTF_DEB_MAIN); 711 return 0; 712} 713 714static void __exit lbtf_exit_module(void) 715{ 716 lbtf_deb_enter(LBTF_DEB_MAIN); 717 destroy_workqueue(lbtf_wq); 718 lbtf_deb_leave(LBTF_DEB_MAIN); 719} 720 721module_init(lbtf_init_module); 722module_exit(lbtf_exit_module); 723 724MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); 725MODULE_AUTHOR("Cozybit Inc."); 726MODULE_LICENSE("GPL"); 727